'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title || 'Vue Flow Editor' // page title
// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
const port = 8082 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',

  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,

  devServer: {
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    },
    proxy: {
      // change xxx-api/login => mock/login
      // detail: https://cli.vuejs.org/config/#devserver-proxy
      [process.env.VUE_APP_BASE_API]: {
        target: `http://localhost:${port}`,
        changeOrigin: true,
        pathRewrite: {
          ['^' + process.env.VUE_APP_BASE_API]: ''
        }
      }
    },
    // after: require('./mock/mock-server.js')
  },

  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src'),
        '@flow': resolve('src/pages/esb/flow')
      }
    }
  },

  chainWebpack(config) {
    config.plugins.delete('preload') // TODO: need test
    config.plugins.delete('prefetch') // TODO: need test

    // set svg-sprite-loader
    config.module
    .rule('svg')
    .exclude.add(resolve('src/icons'))
    .end()
    config.module
    .rule('icons')
    .test(/\.svg$/)
    .include.add(resolve('src/icons'))
    .end()
    .use('svg-sprite-loader')
    .loader('svg-sprite-loader')
    .options({
      symbolId: 'icon-[name]'
    })
    .end()

    // set preserveWhitespace
    config.module
    .rule('vue')
    .use('vue-loader')
    .loader('vue-loader')
    .tap(options => {
      options.compilerOptions.preserveWhitespace = true
      return options
    })
    .end()

    config
    // https://webpack.js.org/configuration/devtool/#development
    .when(process.env.NODE_ENV === 'development',
      config => config.devtool('cheap-source-map')
    )

    config
    .when(process.env.NODE_ENV !== 'development',
      config => {
        config
        .plugin('ScriptExtHtmlWebpackPlugin')
        .after('html')
        .use('script-ext-html-webpack-plugin', [{
          // `runtime` must same as runtimeChunk name. default is `runtime`
          inline: /runtime\..*\.js$/
        }])
        .end()
        config
        .optimization.splitChunks({
          chunks: 'all',
          cacheGroups: {
            libs: {
              name: 'chunk-libs',
              test: /[\\/]node_modules[\\/]/,
              priority: 10,
              chunks: 'initial' // only package third parties that are initially dependent
            },
            elementUI: {
              name: 'chunk-elementUI', // split elementUI into a single package
              priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
              test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
            },
            commons: {
              name: 'chunk-commons',
              test: resolve('src/components'), // can customize your rules
              minChunks: 3, //  minimum common number
              priority: 5,
              reuseExistingChunk: true
            }
          }
        })
        config.optimization.runtimeChunk('single')
      }
    )
  },

  pluginOptions: {
    i18n: {
      locale: 'zh',
      fallbackLocale: 'en',
      localeDir: 'locales',
      enableInSFC: false
    }
  }
}
